Measurement of axial and transverse trapping stiffness of optical tweezers in air using a radially polarized beam

Masaki Michihata, Terutake Hayashi, Yasuhiro Takaya

研究成果: ジャーナルへの寄稿学術誌査読

60 被引用数 (Scopus)

抄録

The trapping efficiency and stiffness of optical tweezers using radial polarization are evaluated; the ray-tracing method and a proposed measurement method are used for numerical and experimental analyses, respectively. The maximum axial trapping efficiency with radial polarization is 1.84 times that with linear polarization, while the maximum transverse trapping efficiency decreases by 0.58 times. Further, the axial and transverse trapping efficiencies are found to be 1.19 times larger and 0.83 times smaller, respectively, than the values with linear polarization. From the experiments, the axial and transverse stiffness values are 1.2 times larger and 0.8 times smaller, respectively, with radial polarization. Hence, radial polarization enhances the axial trapping properties while reducing the transverse trapping properties.

本文言語英語
ページ(範囲)6143-6151
ページ数9
ジャーナルApplied Optics
48
32
DOI
出版ステータス出版済み - 11月 10 2009
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 原子分子物理学および光学
  • 工学(その他)
  • 電子工学および電気工学

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